Doubt it. Testing in Yuma right now is fairly pointless as the weather is fairly "normal". Second, most of the time they'll truck the vehicles straight there. . .

Why else would they be in San Diego? San Diego is one of the furthest cities from anywhere else they'd go, and it should have fairly similar weather to Yuma anyways. San Diego just works out as a downtown testing location, and the interstate from Yuma to San Diego helps to put more miles on the mules.